+/*
+ * QEMU float support
+ *
+ * Derived from SoftFloat.
+ */
+
/*============================================================================
This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic
#ifndef SOFTFLOAT_H
#define SOFTFLOAT_H
+#if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH)
+#include <sunmath.h>
+#endif
+
#include <inttypes.h>
#include "config.h"
| implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
| to the same as `int'.
*----------------------------------------------------------------------------*/
-typedef char flag;
+typedef uint8_t flag;
typedef uint8_t uint8;
typedef int8_t int8;
+#ifndef _AIX
typedef int uint16;
typedef int int16;
+#endif
typedef unsigned int uint32;
typedef signed int int32;
typedef uint64_t uint64;
typedef int64_t int64;
-/*----------------------------------------------------------------------------
-| Each of the following `typedef's defines a type that holds integers
-| of _exactly_ the number of bits specified. For instance, for most
-| implementation of C, `bits16' and `sbits16' should be `typedef'ed to
-| `unsigned short int' and `signed short int' (or `short int'), respectively.
-*----------------------------------------------------------------------------*/
-typedef uint8_t bits8;
-typedef int8_t sbits8;
-typedef uint16_t bits16;
-typedef int16_t sbits16;
-typedef uint32_t bits32;
-typedef int32_t sbits32;
-typedef uint64_t bits64;
-typedef int64_t sbits64;
-
#define LIT64( a ) a##LL
#define INLINE static inline
+#if defined(TARGET_MIPS) || defined(TARGET_SH4)
+#define SNAN_BIT_IS_ONE 1
+#else
+#define SNAN_BIT_IS_ONE 0
+#endif
+
/*----------------------------------------------------------------------------
| The macro `FLOATX80' must be defined to enable the extended double-precision
| floating-point format `floatx80'. If this macro is not defined, the
#define FLOAT128
#else
/* native float support */
-#if (defined(__i386__) || defined(__x86_64__)) && !defined(_BSD)
+#if (defined(__i386__) || defined(__x86_64__)) && !defined(CONFIG_BSD)
#define FLOATX80
#endif
#endif /* !CONFIG_SOFTFLOAT */
/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point types.
*----------------------------------------------------------------------------*/
+/* Use structures for soft-float types. This prevents accidentally mixing
+ them with native int/float types. A sufficiently clever compiler and
+ sane ABI should be able to see though these structs. However
+ x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */
+//#define USE_SOFTFLOAT_STRUCT_TYPES
+#ifdef USE_SOFTFLOAT_STRUCT_TYPES
+typedef struct {
+ uint16_t v;
+} float16;
+#define float16_val(x) (((float16)(x)).v)
+#define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; })
+#define const_float16(x) { x }
+typedef struct {
+ uint32_t v;
+} float32;
+/* The cast ensures an error if the wrong type is passed. */
+#define float32_val(x) (((float32)(x)).v)
+#define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; })
+#define const_float32(x) { x }
+typedef struct {
+ uint64_t v;
+} float64;
+#define float64_val(x) (((float64)(x)).v)
+#define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; })
+#define const_float64(x) { x }
+#else
+typedef uint16_t float16;
typedef uint32_t float32;
typedef uint64_t float64;
+#define float16_val(x) (x)
+#define float32_val(x) (x)
+#define float64_val(x) (x)
+#define make_float16(x) (x)
+#define make_float32(x) (x)
+#define make_float64(x) (x)
+#define const_float16(x) (x)
+#define const_float32(x) (x)
+#define const_float64(x) (x)
+#endif
#ifdef FLOATX80
typedef struct {
uint64_t low;
#endif
#ifdef FLOAT128
typedef struct {
-#ifdef WORDS_BIGENDIAN
+#ifdef HOST_WORDS_BIGENDIAN
uint64_t high, low;
#else
uint64_t low, high;
float_flag_divbyzero = 4,
float_flag_overflow = 8,
float_flag_underflow = 16,
- float_flag_inexact = 32
+ float_flag_inexact = 32,
+ float_flag_input_denormal = 64
};
typedef struct float_status {
#ifdef FLOATX80
signed char floatx80_rounding_precision;
#endif
+ /* should denormalised results go to zero and set the inexact flag? */
+ flag flush_to_zero;
+ /* should denormalised inputs go to zero and set the input_denormal flag? */
+ flag flush_inputs_to_zero;
+ flag default_nan_mode;
} float_status;
void set_float_rounding_mode(int val STATUS_PARAM);
void set_float_exception_flags(int val STATUS_PARAM);
+INLINE void set_flush_to_zero(flag val STATUS_PARAM)
+{
+ STATUS(flush_to_zero) = val;
+}
+INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM)
+{
+ STATUS(flush_inputs_to_zero) = val;
+}
+INLINE void set_default_nan_mode(flag val STATUS_PARAM)
+{
+ STATUS(default_nan_mode) = val;
+}
INLINE int get_float_exception_flags(float_status *status)
{
return STATUS(float_exception_flags);
/*----------------------------------------------------------------------------
| Software IEC/IEEE integer-to-floating-point conversion routines.
*----------------------------------------------------------------------------*/
-float32 int32_to_float32( int STATUS_PARAM );
-float64 int32_to_float64( int STATUS_PARAM );
+float32 int32_to_float32( int32 STATUS_PARAM );
+float64 int32_to_float64( int32 STATUS_PARAM );
float32 uint32_to_float32( unsigned int STATUS_PARAM );
float64 uint32_to_float64( unsigned int STATUS_PARAM );
#ifdef FLOATX80
-floatx80 int32_to_floatx80( int STATUS_PARAM );
+floatx80 int32_to_floatx80( int32 STATUS_PARAM );
#endif
#ifdef FLOAT128
-float128 int32_to_float128( int STATUS_PARAM );
+float128 int32_to_float128( int32 STATUS_PARAM );
#endif
-float32 int64_to_float32( int64_t STATUS_PARAM );
-float64 int64_to_float64( int64_t STATUS_PARAM );
+float32 int64_to_float32( int64 STATUS_PARAM );
+float32 uint64_to_float32( uint64 STATUS_PARAM );
+float64 int64_to_float64( int64 STATUS_PARAM );
+float64 uint64_to_float64( uint64 STATUS_PARAM );
#ifdef FLOATX80
-floatx80 int64_to_floatx80( int64_t STATUS_PARAM );
+floatx80 int64_to_floatx80( int64 STATUS_PARAM );
#endif
#ifdef FLOAT128
-float128 int64_to_float128( int64_t STATUS_PARAM );
+float128 int64_to_float128( int64 STATUS_PARAM );
+#endif
+
+/*----------------------------------------------------------------------------
+| Software half-precision conversion routines.
+*----------------------------------------------------------------------------*/
+float16 float32_to_float16( float32, flag STATUS_PARAM );
+float32 float16_to_float32( float16, flag STATUS_PARAM );
+
+/*----------------------------------------------------------------------------
+| Software half-precision operations.
+*----------------------------------------------------------------------------*/
+int float16_is_quiet_nan( float16 );
+int float16_is_signaling_nan( float16 );
+float16 float16_maybe_silence_nan( float16 );
+
+/*----------------------------------------------------------------------------
+| The pattern for a default generated half-precision NaN.
+*----------------------------------------------------------------------------*/
+#if defined(TARGET_ARM)
+#define float16_default_nan make_float16(0x7E00)
+#elif SNAN_BIT_IS_ONE
+#define float16_default_nan make_float16(0x7DFF)
+#else
+#define float16_default_nan make_float16(0xFE00)
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision conversion routines.
*----------------------------------------------------------------------------*/
-int float32_to_int32( float32 STATUS_PARAM );
-int float32_to_int32_round_to_zero( float32 STATUS_PARAM );
-unsigned int float32_to_uint32( float32 STATUS_PARAM );
-unsigned int float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
-int64_t float32_to_int64( float32 STATUS_PARAM );
-int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM );
+int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM );
+unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM );
+int32 float32_to_int32( float32 STATUS_PARAM );
+int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM );
+uint32 float32_to_uint32( float32 STATUS_PARAM );
+uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
+int64 float32_to_int64( float32 STATUS_PARAM );
+int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM );
float64 float32_to_float64( float32 STATUS_PARAM );
#ifdef FLOATX80
floatx80 float32_to_floatx80( float32 STATUS_PARAM );
float32 float32_div( float32, float32 STATUS_PARAM );
float32 float32_rem( float32, float32 STATUS_PARAM );
float32 float32_sqrt( float32 STATUS_PARAM );
-char float32_eq( float32, float32 STATUS_PARAM );
-char float32_le( float32, float32 STATUS_PARAM );
-char float32_lt( float32, float32 STATUS_PARAM );
-char float32_eq_signaling( float32, float32 STATUS_PARAM );
-char float32_le_quiet( float32, float32 STATUS_PARAM );
-char float32_lt_quiet( float32, float32 STATUS_PARAM );
-char float32_compare( float32, float32 STATUS_PARAM );
-char float32_compare_quiet( float32, float32 STATUS_PARAM );
-char float32_is_signaling_nan( float32 );
-flag float64_is_nan( float64 a );
+float32 float32_exp2( float32 STATUS_PARAM );
+float32 float32_log2( float32 STATUS_PARAM );
+int float32_eq( float32, float32 STATUS_PARAM );
+int float32_le( float32, float32 STATUS_PARAM );
+int float32_lt( float32, float32 STATUS_PARAM );
+int float32_eq_signaling( float32, float32 STATUS_PARAM );
+int float32_le_quiet( float32, float32 STATUS_PARAM );
+int float32_lt_quiet( float32, float32 STATUS_PARAM );
+int float32_compare( float32, float32 STATUS_PARAM );
+int float32_compare_quiet( float32, float32 STATUS_PARAM );
+int float32_is_quiet_nan( float32 );
+int float32_is_signaling_nan( float32 );
+float32 float32_maybe_silence_nan( float32 );
+float32 float32_scalbn( float32, int STATUS_PARAM );
INLINE float32 float32_abs(float32 a)
{
- return a & 0x7fffffff;
+ /* Note that abs does *not* handle NaN specially, nor does
+ * it flush denormal inputs to zero.
+ */
+ return make_float32(float32_val(a) & 0x7fffffff);
}
INLINE float32 float32_chs(float32 a)
{
- return a ^ 0x80000000;
+ /* Note that chs does *not* handle NaN specially, nor does
+ * it flush denormal inputs to zero.
+ */
+ return make_float32(float32_val(a) ^ 0x80000000);
+}
+
+INLINE int float32_is_infinity(float32 a)
+{
+ return (float32_val(a) & 0x7fffffff) == 0x7f800000;
+}
+
+INLINE int float32_is_neg(float32 a)
+{
+ return float32_val(a) >> 31;
+}
+
+INLINE int float32_is_zero(float32 a)
+{
+ return (float32_val(a) & 0x7fffffff) == 0;
+}
+
+INLINE int float32_is_any_nan(float32 a)
+{
+ return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL);
+}
+
+INLINE int float32_is_zero_or_denormal(float32 a)
+{
+ return (float32_val(a) & 0x7f800000) == 0;
+}
+
+INLINE float32 float32_set_sign(float32 a, int sign)
+{
+ return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31));
}
+#define float32_zero make_float32(0)
+#define float32_one make_float32(0x3f800000)
+#define float32_ln2 make_float32(0x3f317218)
+#define float32_half make_float32(0x3f000000)
+#define float32_infinity make_float32(0x7f800000)
+
+
+/*----------------------------------------------------------------------------
+| The pattern for a default generated single-precision NaN.
+*----------------------------------------------------------------------------*/
+#if defined(TARGET_SPARC)
+#define float32_default_nan make_float32(0x7FFFFFFF)
+#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
+#define float32_default_nan make_float32(0x7FC00000)
+#elif SNAN_BIT_IS_ONE
+#define float32_default_nan make_float32(0x7FBFFFFF)
+#else
+#define float32_default_nan make_float32(0xFFC00000)
+#endif
+
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
*----------------------------------------------------------------------------*/
-int float64_to_int32( float64 STATUS_PARAM );
-int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
-unsigned int float64_to_uint32( float64 STATUS_PARAM );
-unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
-int64_t float64_to_int64( float64 STATUS_PARAM );
-int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
+int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM );
+unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM );
+int32 float64_to_int32( float64 STATUS_PARAM );
+int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM );
+uint32 float64_to_uint32( float64 STATUS_PARAM );
+uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
+int64 float64_to_int64( float64 STATUS_PARAM );
+int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM );
+uint64 float64_to_uint64 (float64 a STATUS_PARAM);
+uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM);
float32 float64_to_float32( float64 STATUS_PARAM );
#ifdef FLOATX80
floatx80 float64_to_floatx80( float64 STATUS_PARAM );
float64 float64_div( float64, float64 STATUS_PARAM );
float64 float64_rem( float64, float64 STATUS_PARAM );
float64 float64_sqrt( float64 STATUS_PARAM );
-char float64_eq( float64, float64 STATUS_PARAM );
-char float64_le( float64, float64 STATUS_PARAM );
-char float64_lt( float64, float64 STATUS_PARAM );
-char float64_eq_signaling( float64, float64 STATUS_PARAM );
-char float64_le_quiet( float64, float64 STATUS_PARAM );
-char float64_lt_quiet( float64, float64 STATUS_PARAM );
-char float64_compare( float64, float64 STATUS_PARAM );
-char float64_compare_quiet( float64, float64 STATUS_PARAM );
-char float64_is_signaling_nan( float64 );
+float64 float64_log2( float64 STATUS_PARAM );
+int float64_eq( float64, float64 STATUS_PARAM );
+int float64_le( float64, float64 STATUS_PARAM );
+int float64_lt( float64, float64 STATUS_PARAM );
+int float64_eq_signaling( float64, float64 STATUS_PARAM );
+int float64_le_quiet( float64, float64 STATUS_PARAM );
+int float64_lt_quiet( float64, float64 STATUS_PARAM );
+int float64_compare( float64, float64 STATUS_PARAM );
+int float64_compare_quiet( float64, float64 STATUS_PARAM );
+int float64_is_quiet_nan( float64 a );
+int float64_is_signaling_nan( float64 );
+float64 float64_maybe_silence_nan( float64 );
+float64 float64_scalbn( float64, int STATUS_PARAM );
INLINE float64 float64_abs(float64 a)
{
- return a & 0x7fffffffffffffffLL;
+ /* Note that abs does *not* handle NaN specially, nor does
+ * it flush denormal inputs to zero.
+ */
+ return make_float64(float64_val(a) & 0x7fffffffffffffffLL);
}
INLINE float64 float64_chs(float64 a)
{
- return a ^ 0x8000000000000000LL;
+ /* Note that chs does *not* handle NaN specially, nor does
+ * it flush denormal inputs to zero.
+ */
+ return make_float64(float64_val(a) ^ 0x8000000000000000LL);
+}
+
+INLINE int float64_is_infinity(float64 a)
+{
+ return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL;
+}
+
+INLINE int float64_is_neg(float64 a)
+{
+ return float64_val(a) >> 63;
+}
+
+INLINE int float64_is_zero(float64 a)
+{
+ return (float64_val(a) & 0x7fffffffffffffffLL) == 0;
+}
+
+INLINE int float64_is_any_nan(float64 a)
+{
+ return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL);
+}
+
+INLINE float64 float64_set_sign(float64 a, int sign)
+{
+ return make_float64((float64_val(a) & 0x7fffffffffffffffULL)
+ | ((int64_t)sign << 63));
}
+#define float64_zero make_float64(0)
+#define float64_one make_float64(0x3ff0000000000000LL)
+#define float64_ln2 make_float64(0x3fe62e42fefa39efLL)
+#define float64_half make_float64(0x3fe0000000000000LL)
+#define float64_infinity make_float64(0x7ff0000000000000LL)
+
+/*----------------------------------------------------------------------------
+| The pattern for a default generated double-precision NaN.
+*----------------------------------------------------------------------------*/
+#if defined(TARGET_SPARC)
+#define float64_default_nan make_float64(LIT64( 0x7FFFFFFFFFFFFFFF ))
+#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA)
+#define float64_default_nan make_float64(LIT64( 0x7FF8000000000000 ))
+#elif SNAN_BIT_IS_ONE
+#define float64_default_nan make_float64(LIT64( 0x7FF7FFFFFFFFFFFF ))
+#else
+#define float64_default_nan make_float64(LIT64( 0xFFF8000000000000 ))
+#endif
+
#ifdef FLOATX80
/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision conversion routines.
*----------------------------------------------------------------------------*/
-int floatx80_to_int32( floatx80 STATUS_PARAM );
-int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
-int64_t floatx80_to_int64( floatx80 STATUS_PARAM );
-int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
+int32 floatx80_to_int32( floatx80 STATUS_PARAM );
+int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
+int64 floatx80_to_int64( floatx80 STATUS_PARAM );
+int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM );
float32 floatx80_to_float32( floatx80 STATUS_PARAM );
float64 floatx80_to_float64( floatx80 STATUS_PARAM );
#ifdef FLOAT128
floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
-char floatx80_eq( floatx80, floatx80 STATUS_PARAM );
-char floatx80_le( floatx80, floatx80 STATUS_PARAM );
-char floatx80_lt( floatx80, floatx80 STATUS_PARAM );
-char floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM );
-char floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
-char floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
-char floatx80_is_signaling_nan( floatx80 );
+int floatx80_eq( floatx80, floatx80 STATUS_PARAM );
+int floatx80_le( floatx80, floatx80 STATUS_PARAM );
+int floatx80_lt( floatx80, floatx80 STATUS_PARAM );
+int floatx80_eq_signaling( floatx80, floatx80 STATUS_PARAM );
+int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM );
+int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM );
+int floatx80_is_quiet_nan( floatx80 );
+int floatx80_is_signaling_nan( floatx80 );
+floatx80 floatx80_maybe_silence_nan( floatx80 );
+floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM );
INLINE floatx80 floatx80_abs(floatx80 a)
{
return a;
}
+INLINE int floatx80_is_infinity(floatx80 a)
+{
+ return (a.high & 0x7fff) == 0x7fff && a.low == 0;
+}
+
+INLINE int floatx80_is_neg(floatx80 a)
+{
+ return a.high >> 15;
+}
+
+INLINE int floatx80_is_zero(floatx80 a)
+{
+ return (a.high & 0x7fff) == 0 && a.low == 0;
+}
+
+INLINE int floatx80_is_any_nan(floatx80 a)
+{
+ return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
+}
+
+/*----------------------------------------------------------------------------
+| The pattern for a default generated extended double-precision NaN. The
+| `high' and `low' values hold the most- and least-significant bits,
+| respectively.
+*----------------------------------------------------------------------------*/
+#if SNAN_BIT_IS_ONE
+#define floatx80_default_nan_high 0x7FFF
+#define floatx80_default_nan_low LIT64( 0xBFFFFFFFFFFFFFFF )
+#else
+#define floatx80_default_nan_high 0xFFFF
+#define floatx80_default_nan_low LIT64( 0xC000000000000000 )
+#endif
+
#endif
#ifdef FLOAT128
/*----------------------------------------------------------------------------
| Software IEC/IEEE quadruple-precision conversion routines.
*----------------------------------------------------------------------------*/
-int float128_to_int32( float128 STATUS_PARAM );
-int float128_to_int32_round_to_zero( float128 STATUS_PARAM );
-int64_t float128_to_int64( float128 STATUS_PARAM );
-int64_t float128_to_int64_round_to_zero( float128 STATUS_PARAM );
+int32 float128_to_int32( float128 STATUS_PARAM );
+int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM );
+int64 float128_to_int64( float128 STATUS_PARAM );
+int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM );
float32 float128_to_float32( float128 STATUS_PARAM );
float64 float128_to_float64( float128 STATUS_PARAM );
#ifdef FLOATX80
float128 float128_div( float128, float128 STATUS_PARAM );
float128 float128_rem( float128, float128 STATUS_PARAM );
float128 float128_sqrt( float128 STATUS_PARAM );
-char float128_eq( float128, float128 STATUS_PARAM );
-char float128_le( float128, float128 STATUS_PARAM );
-char float128_lt( float128, float128 STATUS_PARAM );
-char float128_eq_signaling( float128, float128 STATUS_PARAM );
-char float128_le_quiet( float128, float128 STATUS_PARAM );
-char float128_lt_quiet( float128, float128 STATUS_PARAM );
-char float128_is_signaling_nan( float128 );
+int float128_eq( float128, float128 STATUS_PARAM );
+int float128_le( float128, float128 STATUS_PARAM );
+int float128_lt( float128, float128 STATUS_PARAM );
+int float128_eq_signaling( float128, float128 STATUS_PARAM );
+int float128_le_quiet( float128, float128 STATUS_PARAM );
+int float128_lt_quiet( float128, float128 STATUS_PARAM );
+int float128_compare( float128, float128 STATUS_PARAM );
+int float128_compare_quiet( float128, float128 STATUS_PARAM );
+int float128_is_quiet_nan( float128 );
+int float128_is_signaling_nan( float128 );
+float128 float128_maybe_silence_nan( float128 );
+float128 float128_scalbn( float128, int STATUS_PARAM );
INLINE float128 float128_abs(float128 a)
{
return a;
}
+INLINE int float128_is_infinity(float128 a)
+{
+ return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0;
+}
+
+INLINE int float128_is_neg(float128 a)
+{
+ return a.high >> 63;
+}
+
+INLINE int float128_is_zero(float128 a)
+{
+ return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0;
+}
+
+INLINE int float128_is_any_nan(float128 a)
+{
+ return ((a.high >> 48) & 0x7fff) == 0x7fff &&
+ ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0));
+}
+
+/*----------------------------------------------------------------------------
+| The pattern for a default generated quadruple-precision NaN. The `high' and
+| `low' values hold the most- and least-significant bits, respectively.
+*----------------------------------------------------------------------------*/
+#if SNAN_BIT_IS_ONE
+#define float128_default_nan_high LIT64( 0x7FFF7FFFFFFFFFFF )
+#define float128_default_nan_low LIT64( 0xFFFFFFFFFFFFFFFF )
+#else
+#define float128_default_nan_high LIT64( 0xFFFF800000000000 )
+#define float128_default_nan_low LIT64( 0x0000000000000000 )
+#endif
+
#endif
#else /* CONFIG_SOFTFLOAT */
projects / qemu.git / blobdiff